Home / 780,108.90-1,170,076.95-219,200.10

Finding the Fourth Proportional to 780,108.90, 1,170,076.95 and 219,200.10

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Solution

The fourth proportional to 780,108.90, 1,170,076.95 and 219,200.10 is: 328,775.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,108.90 : 1,170,076.95 = 219,200.10 : x
  2. Step 2: Convert to fraction form
    780,108.90/1,170,076.95 = 219,200.10/x
  3. Step 3: Cross multiply
    780,108.90x = 1,170,076.95 × 219,200.10
  4. Step 4: Simplify right side
    780,108.90x = 256,480,984,447.70
  5. Step 5: Solve for x
    x = 256,480,984,447.70/780,108.90
  6. Step 6: Final answer
    x = 328,775.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.